Tooth-brush.



N0. 851,501. PATENTBD APR. 23, 1907. E. L. DBTRICK.

TOOTH BRUSH.

APPLIUATION FILED .TUNE 19.1906,

@liter/ms 5 5 each other, to receive the ends of a. brush 14 l sion upon seid shank having ii hearing recess iio UNITED STATES PATENT OFFICE.

Bpecication of Letters Patent.

Patented April 23, 1907.

Application Bleil Jima 18.1906. Serial Nn. 322,287.

To all whom it may concern: I

Beit known that l, ERNEST L. Dn'rntoir, n citizen of the United States, residing at Cleveland, in the county of Cuyahoga. and State ol" Ohio, have invented certain new and useful improve-nichts in TootleBrushes; and 1 do dechire the following to he a. f'ull, clear, and exiict description of the invention, such :is will eniihle others skilled in the art to which it :ippertiiins to niiike and use the sinne.

This invention relates to improvements in tooth hrushes.

The ohjeet of the invention is to provide a simple and practical device of this character, in which the hrush head ivill he given an oscillator) movement, so that the teeth may be thoroughly cleaned.

'ith the above and other ohjccts in view, the invention consists of the novel features i of construction, combination, and errang nient of devices hereinafter described and claimed.

ln the accompanying d1a\\'ing ,fs,-l*`gnre 1 is u side elevation of' the iliiproved tooth brush; Fig. 2 is a top plan view oi' the simio; Fig. 3 is :i longitudinal sectional view; Figs. 4 and 5 are transverse sectional views, taken L on the plaines indicated by the lilies 4-4 and 5-5 in Fig. J5: :1nd Fig'. 6 is :i detail view showing the holder for the brush and a portion of-the twisted shaft.

Referring to the drawings, l denotes :i tulzulnr shrink, l'ireeraihliU of ovzil shape in @mss-section, provided at. one end with u handle 2, and nt its other end with :iV tra-iisvers-ely curved, longitudinal extension 3, which hitter has its end bent inwardly at l right :mules and formed with n cone shaped bearingv rei-ess 4, a similar hearing recess 5 hein;r provided upon the inuerface of the opposite end of the shank, its shown in Fig. 3. These hearing recesses 4, 5, aire adapted to rcceive the tu )ered or eone-shiipeul pivots 6, 7, of an oscil tiling' element S coinprisinff a twisted shell Sl and u hrush holder 1U. The shaft l) disposed within the shank 1 and has the piiot 7 u1 one ol its ends, and it cyliIidiii-ul neck ll :it its other end. This iii-cli ll projects through und rotates in the end l2 nl the nei-k, und hns one end oiI tho holder lll formed upon or secured to il. This holder 1t) which carries the pivot 6, is in the form of l a. pla-te having;I its ends curved inward toward Q vention will be readily seen. i ger-piece 16. is moved longitudinally in the slot 17, it will be seen that its forked end 15 4 the invention, as delined bjv and retain the latter removable therein. The shaft 9 is preferably in the form ot' a. flat bar of steel or other metal, twisted at im angle of about sixty degrees, alternately, to the right and to the left, throughout its lengt-h, as clearly shown in Figs. 3 and 6. Slidohly engaged with this shaft is the bifurctited inner end 15 of en operating {inger-piece 16,

t which latter projects through and slides in a longitudinal slot 1'?, formed intho shank. This finger-piece has upon its outer ond u.

head or enlargement 1S, and is steadied in its Sliding movements by a. curved plate 19, which is attached to it and which slides upon the outer face of the shank.

The operation and advantages of the in- When the finwil cause the shaft 9 to he rotated or oscillated, first in one direction and then in the opposite direction, so that the brush head 14 b e given un oscillatory movement to cause its bristles to strike the teeth vertically or up and down and enter between them. 1t

l will be noted that the device may also be used as an ordinary tooth brush for scrubhing or brushing the teeth horizontally or transversely. It will also be noted that the d evice of simple, durable and comparap tively inexpensive construction, und that it is easy to operate and very efi'eetive..

Milieus changes in the form, proportion, and the minor details of construction muy be j. resorted to Without departing from the principle or sacrificing any of the advantages of the appended claims.

Hoving thus` described my invention, what l cla-ini ns new, and desire to secure by Lettersdiiteiit, is,-

l. A tooth brush comprising ii shank, :in oscillating element, rind ii brush head removably iitta-ched to sii-id element.

L. A tooth brush comprising n. tubular shank formed with a. longitudinal slot with on aperture nt one end and n bearing recess in its other end, u handle ut the hitter ond of Sitid body, ai twisted shol't iii Suid shank having one end engaged with said hearing recess und its opposite end projet-ling through .said aperture, nV brush holder upon seid hist-inentioncd end of siiid shaft, n Iuush head in snid holder, ii pivot upon said holder, un extcntu receive thv p'lvul, upun Suid holder, u hnger-pwv prulurfhng through nml shdnble 1n or slotted inner und tu cngnge sull! twisted shaft, subshmlinll ns (hfsvrihvd.

3. A launlfh brush vom )rising u shank, :L slmfL nmunlm therein xuu runrsls'ling nl' n Hat bnr twislml ullurnulcly in upposllif: drcutions at n brush heau'l carried by Suid shaft, and u li:didnhly-olwl'nld ululmcnl upon nini #hunk |o und vngngcd with smd Shah. the slot 1n sind shank nml lmvlng u notchml In llstnnfmy whzl'vnf I huw hurvuntu sul,

my Imm! in prvsonvv nl' Iwo hnhfwrihing M 1105505. 

